PKF Mueller

Enhancing the lifetime success of our clients

The Mueller Team

Ulises Ruiz



Ulises joined Mueller in 2017 bringing 24 years of experience in International tax planning and consulting for multinational companies. His work experience includes working independently in a tax advisory role and for multiple Big 4 firms. His focus is on tax structuring, reorganizations, repatriation of earnings, effective tax rate management, financing, mergers and acquisitions, and transfer pricing.

He has had responsibilities for creating and implementing tax planning strategies for US multinationals investing in Europe, Asia and Latin America across multiple industries, including technology, manufacturing, consumer products, pharmaceutical, automotive and private equity. Additionally, Ulises’ experience includes tax treaties, global earnings management solutions, subpart F, foreign tax credit, acquisition due diligence and post-acquisition integration tax strategies, tax efficient debt financing, cash repatriation and direct and indirect tax compliance.

Ulises is fluent in English, Spanish, and French.

Education & Certifications

  • New York University, School of Law New York, New York
  • Graduate Tax Program (LLM Tax) 1997-2000
  • Instituto Tecnologico Autonomo de Mexico, ITAM Mexico City, Mexico Law Degree 1987-1992

Professional & Civic Organizations

  • American Bar Association
  • International Fiscal Association, IFA
  • Bar Association of Attorneys from ITAM
  • Illinois CPA Society (ILCPAS)


Author: 897 T.M. Transfer Pricing: Foreign Rules and Practice Outside of Europe, Chapter 32: Mexico, Bloomberg BNA, Tax Management, 2015.




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